- 750 mill ampere
- 50 mill ampere
- 75 mill ampere
- 50 ampere
- 5 ampere
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) In restricted earth neutral system of power supply for voltage exceeding 1.1 KV (1100 Volts) & up to 11 KV in O/C mines should be limited?
Solution:
In restricted earth neutral system of power supply for voltage exceeding 1.1 KV (1100 Volts) & up to 11 KV in O/C mines should be limited to 50 ampere
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